Door-knob



(No Model.)

e. NBWBBRG.

DOOR KNOB. No. 270,828. Patented Jan. 16,1883".

lllllllllllllll lllll m5555555 QMCZ/mmf UNITED STATESA PATENT OEEIcE.

GUSTAVE NEWBERG, OF CHICAGO, ILLINOIS.

Doon-KNOB.

SPECIFICATION forming part of Letters Patent No. 270,828, dated January 16, 1883,

Application filed October 3, 1882. (No model.)

Toall whom it may concern:

Be it known that I, GUsTAvE N EWBERG, a subject of the Kingdom of Sweden, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Knobs for Door Locks and Latches, set forth in the following specitition.

My invention relates to knobs for door locks and latches; and it consists in the peculiar construction of the same, whereby rivets and screws are not needed to secure the knob to thelock-shaft. No washers are necessary where doors are not ot' the same thickness, and the knob is madeto operate better and its construction cheapened, as will be hereinafter more fully set forth.

ln order to enable others skilled in the artv construction and operation, referring to the accompanying drawings, in which- Figure l is a longitudinal section of my invention applied to a door. Figs. 2, 3, and 4 are detail views of separate parts of my knob before being united.

A represents the main portion ot' my lock, of

which ais the rose, made somewhat larger than usual, for a purpose set forth hereinafter.

a is the shank of the knob, secured firmly to the rose, and formed on its outer end with a plate, a2, having beveled edges, as seen in Fig. l. The shank a is hollow, as usual, for the passage of the knob-shaft, and the plate a2 is cast with two projecting lugs, b b, on its outer face, which support at a suitable distance the plate b', which forms the face-plate ofthe knob when the partsv are secured together. This plate b' is slightly larger in diameter than the plate a2, as will be presently seen.

B is abar of metahpreferably tapered toward its ends, and provided with a square opening, c, in its center, which is placed between the' plates c2 and b', and is ot' a length sufficient to project slightly beyond the edges of these plates.

C is a metal ring of sufficient diameter to slip over the plates a2 and b', and provided with an internal annular shoulder, c', as seen in Figs. l and 2. The inner face of this ring C is also formed with two transverse grooves, c2, directly opposite each other, sufficiently large to admit the ends of the bar B.

In putting the parts together the bar B is placed between the plates a2 and b', and the ring C is then slipped on from the rear side till the ends of said bar enter the grooves c2 and the shoulder c on the ring abuts against the plate b. The edges of the ring C are now spun over the plates a2 b, and the ring is secured firmly in position, but free to turn upon the plates. The rose is now secured tothe shank and the knob is complete and ready to be attached to a door The hole in a lock through which the square knob-shaft passes is always made near one corner, and by making the rosea large I am cnabled to pass a rivet through the door and the rose on both knobs, and thus secure them firmly in place, and use no screws, which are liable to get loose and allow the knob to play and rattle. The square shaft Dis placed in the door before the knobs are secured, and its ends pass through the openings in the bars B,

andheilig free to project beyond this bar at each end, I do not need to use any washers if the shaft is too long for the thickness of a door, as is usually done.

No screws are necessary to secure the knobs4 to the shaft, and the ring C is free to turn a quarterrevolution in either direction, when it is stopped by the bar B striking the lugs b b.

This knob is very cheap, light, simple, and durable in its construction and use, and has no screws to lose outor catch and tear clothing.

Having thus 'fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The combination. in a door-knob, of the bar B, having central opening', with the ring C, provided with internal transverse grooves, substantially as shown and described.

2. The combination, in a door-knob, of the plates a? and b', joined by lugs b, with the ring C, having its edges spun over the said plates, and provided with grooves c2 for engaging the ends of the bar B, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence ot' two witnesses.

lGUS'IAVE NEWBERG. 

